Soft-Decision Decoding in Asynchronous FH/SSMA Networks Using MFSK Modulation(Spread Spectrum Technologies and Applications)

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概要

• 論文の詳細を見る

• Soft-decision decoding techniques are applied to asynchronous frequency-hop/spread-spectrum multiple-access (FH/SSMA) networks, where M-ary frequency shift keying (MFSK) is employed to transmit one modulated symbol per hop. Coding schemes using soft-decision decoded binary convolutional codes or turbo codes are considered, both with or without bit-interleaving. Performances of several soft metrics are examined for each coding scheme. It is shown that when multiple access interference is the main source of errors, the product metric offers the best performance among the soft metrics considered for all coding schemes. Furthermore, the application of soft-decision decoded convolutional codes or turbo codes without bit-interleaving is shown to allow for a much larger number of simultaneously transmitting users than hard-decision decoded Reed-Solomon codes. Finally, it is observed that when soft-decision decoding techniques are employed, synchronous networks attain better performance than asynchronous networks.

• 社団法人電子情報通信学会の論文
• 2007-06-01

著者

• LIU Yu-Sun

  Department of Electronic Engineering, National Taipei University of Technology

• Liu Yu‐sun

  Department Of Electronic Engineering National Taipei University Of Technology

• Liu Yu-sun

  Department Of Electronic Engineering National Taipei University Of Technology

• Kuo Yao-ming

  Vivotek Inc.

関連論文

• Distributed Dynamic Spectrum Management for Digital Subscriber Lines(Transmission Systems and Transmission Equipment for Communications)
• Soft-Decision Decoding in Asynchronous FH/SSMA Networks Using MFSK Modulation(Spread Spectrum Technologies and Applications)

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